Commit 16378a7d authored by Sreerenj Balachandran's avatar Sreerenj Balachandran Committed by Sebastian Dröge

playback: Add gstplaybackutils.{h,c} to deploy the common subroutines

Bring some of the helper functions in gstplaybin2.c to new files
gstplaybackutils.{h,c} which can be utilized by other files
in gst/playback too.

https://bugzilla.gnome.org/show_bug.cgi?id=687182
parent 51c3ef05
......@@ -13,7 +13,8 @@ libgstplayback_la_SOURCES = \
gstplaysinkvideoconvert.c \
gstplaysinkaudioconvert.c \
gstplaysinkconvertbin.c \
gststreamsynchronizer.c
gststreamsynchronizer.c \
gstplaybackutils.c
nodist_libgstplayback_la_SOURCES = $(built_sources)
libgstplayback_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(csp_cflags)
......@@ -34,7 +35,8 @@ noinst_HEADERS = \
gstplaysinkvideoconvert.h \
gstplaysinkaudioconvert.h \
gstplaysinkconvertbin.h \
gststreamsynchronizer.h
gststreamsynchronizer.h \
gstplaybackutils.h
BUILT_SOURCES = $(built_headers) $(built_sources)
......
/* Copyright (C) <2014> Intel Corporation
* Copyright (C) <2014> Sreerenj Balachandran <sreerenj.balachandran@intel.com>
*
* Author: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gstplaybackutils.h"
static GstStaticCaps raw_audio_caps = GST_STATIC_CAPS ("audio/x-raw(ANY)");
static GstStaticCaps raw_video_caps = GST_STATIC_CAPS ("video/x-raw(ANY)");
/* unref the caps after usage */
static GstCaps *
get_template_caps (GstElementFactory * factory, GstPadDirection direction)
{
const GList *templates;
GstStaticPadTemplate *templ = NULL;
GList *walk;
templates = gst_element_factory_get_static_pad_templates (factory);
for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
templ = walk->data;
if (templ->direction == direction)
break;
}
if (templ)
return gst_static_caps_get (&templ->static_caps);
else
return NULL;
}
static gboolean
is_included (GList * list, GstCapsFeatures * cf)
{
for (; list; list = list->next) {
if (gst_caps_features_is_equal ((GstCapsFeatures *) list->data, cf))
return TRUE;
}
return FALSE;
}
/* compute the number of common caps features */
guint
gst_playback_utils_get_n_common_capsfeatures (GstElementFactory * fact1,
GstElementFactory * fact2, GstPlayFlags flags, gboolean isaudioelement)
{
GstCaps *fact1_tmpl_caps, *fact2_tmpl_caps;
GstCapsFeatures *fact1_features, *fact2_features;
GstStructure *fact1_struct, *fact2_struct;
GList *cf_list = NULL;
guint fact1_caps_size, fact2_caps_size;
guint i, j, n_common_cf = 0;
GstCaps *raw_caps =
(isaudioelement) ? gst_static_caps_get (&raw_audio_caps) :
gst_static_caps_get (&raw_video_caps);
GstStructure *raw_struct = gst_caps_get_structure (raw_caps, 0);
gboolean native_raw =
(isaudioelement ? ! !(flags & GST_PLAY_FLAG_NATIVE_AUDIO) : ! !(flags &
GST_PLAY_FLAG_NATIVE_VIDEO));
fact1_tmpl_caps = get_template_caps (fact1, GST_PAD_SRC);
fact2_tmpl_caps = get_template_caps (fact2, GST_PAD_SINK);
if (!fact1_tmpl_caps || !fact2_tmpl_caps) {
GST_ERROR ("Failed to get template caps from decoder or sink");
return 0;
}
fact1_caps_size = gst_caps_get_size (fact1_tmpl_caps);
fact2_caps_size = gst_caps_get_size (fact2_tmpl_caps);
for (i = 0; i < fact1_caps_size; i++) {
fact1_features =
gst_caps_get_features ((const GstCaps *) fact1_tmpl_caps, i);
fact1_struct =
gst_caps_get_structure ((const GstCaps *) fact1_tmpl_caps, i);
for (j = 0; j < fact2_caps_size; j++) {
fact2_features =
gst_caps_get_features ((const GstCaps *) fact2_tmpl_caps, j);
fact2_struct =
gst_caps_get_structure ((const GstCaps *) fact2_tmpl_caps, j);
/* A common caps feature is given if the caps features are equal
* and the structures can intersect. If the NATIVE_AUDIO/NATIVE_VIDEO
* flags are not set we also allow if both structures are raw caps with
* system memory caps features, because in that case we have converters in
* place.
*/
if (gst_caps_features_is_equal (fact1_features, fact2_features) &&
(gst_structure_can_intersect (fact1_struct, fact2_struct) ||
(!native_raw
&& gst_caps_features_is_equal (fact1_features,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
&& gst_structure_can_intersect (raw_struct, fact1_struct)
&& gst_structure_can_intersect (raw_struct, fact2_struct)))
&& !is_included (cf_list, fact2_features)) {
cf_list = g_list_prepend (cf_list, fact2_features);
n_common_cf++;
}
}
}
if (cf_list)
g_list_free (cf_list);
gst_caps_unref (fact1_tmpl_caps);
gst_caps_unref (fact2_tmpl_caps);
return n_common_cf;
}
/* Copyright (C) <2014> Intel Corporation
* Copyright (C) <2014> Sreerenj Balachandran <sreerenj.balachandran@intel.com>
*
* Author: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_PLAYBACK_UTILS_H__
#define __GST_PLAYBACK_UTILS_H__
G_BEGIN_DECLS
#include <gst/gst.h>
#include "gstplay-enum.h"
guint
gst_playback_utils_get_n_common_capsfeatures (GstElementFactory * fact1,
GstElementFactory * fact2,
GstPlayFlags flags,
gboolean isaudioelement);
G_END_DECLS
#endif /* __GST_PLAYBACK_UTILS_H__ */
......@@ -237,6 +237,7 @@
#include "gstplayback.h"
#include "gstplaysink.h"
#include "gstsubtitleoverlay.h"
#include "gstplaybackutils.h"
GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
#define GST_CAT_DEFAULT gst_play_bin_debug
......@@ -3811,103 +3812,6 @@ avelement_compare (gconstpointer p1, gconstpointer p2)
return strcmp (GST_OBJECT_NAME (fd1), GST_OBJECT_NAME (fd2));
}
/* unref the caps after usage */
static GstCaps *
get_template_caps (GstElementFactory * factory, GstPadDirection direction)
{
const GList *templates;
GstStaticPadTemplate *templ = NULL;
GList *walk;
templates = gst_element_factory_get_static_pad_templates (factory);
for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
templ = walk->data;
if (templ->direction == direction)
break;
}
if (templ)
return gst_static_caps_get (&templ->static_caps);
else
return NULL;
}
static gboolean
is_included (GList * list, GstCapsFeatures * cf)
{
for (; list; list = list->next) {
if (gst_caps_features_is_equal ((GstCapsFeatures *) list->data, cf))
return TRUE;
}
return FALSE;
}
/* compute the number of common caps features */
static guint
get_n_common_capsfeatures (GstPlayBin * playbin, GstElementFactory * dec,
GstElementFactory * sink, gboolean isaudioelement)
{
GstCaps *d_tmpl_caps, *s_tmpl_caps;
GstCapsFeatures *d_features, *s_features;
GstStructure *d_struct, *s_struct;
GList *cf_list = NULL;
guint d_caps_size, s_caps_size;
guint i, j, n_common_cf = 0;
GstCaps *raw_caps =
(isaudioelement) ? gst_static_caps_get (&raw_audio_caps) :
gst_static_caps_get (&raw_video_caps);
GstStructure *raw_struct = gst_caps_get_structure (raw_caps, 0);
GstPlayFlags flags = gst_play_bin_get_flags (playbin);
gboolean native_raw =
(isaudioelement ? ! !(flags & GST_PLAY_FLAG_NATIVE_AUDIO) : ! !(flags &
GST_PLAY_FLAG_NATIVE_VIDEO));
d_tmpl_caps = get_template_caps (dec, GST_PAD_SRC);
s_tmpl_caps = get_template_caps (sink, GST_PAD_SINK);
if (!d_tmpl_caps || !s_tmpl_caps) {
GST_ERROR ("Failed to get template caps from decoder or sink");
return 0;
}
d_caps_size = gst_caps_get_size (d_tmpl_caps);
s_caps_size = gst_caps_get_size (s_tmpl_caps);
for (i = 0; i < d_caps_size; i++) {
d_features = gst_caps_get_features ((const GstCaps *) d_tmpl_caps, i);
d_struct = gst_caps_get_structure ((const GstCaps *) d_tmpl_caps, i);
for (j = 0; j < s_caps_size; j++) {
s_features = gst_caps_get_features ((const GstCaps *) s_tmpl_caps, j);
s_struct = gst_caps_get_structure ((const GstCaps *) s_tmpl_caps, j);
/* A common caps feature is given if the caps features are equal
* and the structures can intersect. If the NATIVE_AUDIO/NATIVE_VIDEO
* flags are not set we also allow if both structures are raw caps with
* system memory caps features, because in that case we have converters in
* place.
*/
if (gst_caps_features_is_equal (d_features, s_features) &&
(gst_structure_can_intersect (d_struct, s_struct) ||
(!native_raw
&& gst_caps_features_is_equal (d_features,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
&& gst_structure_can_intersect (raw_struct, d_struct)
&& gst_structure_can_intersect (raw_struct, s_struct)))
&& !is_included (cf_list, s_features)) {
cf_list = g_list_prepend (cf_list, s_features);
n_common_cf++;
}
}
}
if (cf_list)
g_list_free (cf_list);
gst_caps_unref (d_tmpl_caps);
gst_caps_unref (s_tmpl_caps);
return n_common_cf;
}
static GSequence *
avelements_create (GstPlayBin * playbin, gboolean isaudioelement)
{
......@@ -3951,8 +3855,8 @@ avelements_create (GstPlayBin * playbin, gboolean isaudioelement)
s_factory = (GstElementFactory *) sl->data;
n_common_cf =
get_n_common_capsfeatures (playbin, d_factory, s_factory,
isaudioelement);
gst_playback_utils_get_n_common_capsfeatures (d_factory, s_factory,
gst_play_bin_get_flags (playbin), isaudioelement);
if (n_common_cf < 1)
continue;
......
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